New ASCA Calibration File in the CALDB
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A new "RTI" file for the ASCA GIS has recently been installed in the OGIP
caldb at NASA/GSFC:
/caldb/data/asca/gis/bcf/rti_gis_128_190594.fits
This dataset is has been computed for use with 128 channel PHA datasets,
produced by GIS3 during the period 1994 Feb 10 - Apr 08 (due to a problem
with the onboard CPU). This dataset therefore compliments similar files in
the above location, but which are valid for 256 & 1024 (normal) channel PHA
datasets.
The datasets can be used to reject GIS background events based on their
invariant rise-time values. Further details regarding the use of this file
by FTOOLS/XSELECT will be circulated to GOs by the ASCA GOF.
Ian M George
NASA/GSFC, HEASARC